Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74700271bd52ad069c157ff7958cd53bf9c8a22e4190f54773ef6c98e2da0e31' 
  AND token = 'R1ZGEz5Sf4iOJSbpzBZ0+Z0ubwALW8+YGk7AhRd5zy0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}